{"id":"vidhyamitra:city-day:perth:2183-02-11:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2183-02-11","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2183-02-11","date_display":"February 11, 2183 CE","panchanga":{"method":"Sūrya Siddhānta + Bhāskara-II iterative manda + Kerala-school (Mādhava-Nīlakaṇṭha) evection + variation + annual equation","engine_version":"2.0 (Kerala-school enhanced)","accuracy_note":"Sub-degree on Moon at any Kali-Yuga date (~2-5° residual max)","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":2183,"month":2,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2518425.770833,"kali_year":5284,"ahargana":1929960.2708,"sun":{"sidereal_longitude":295.4396,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":156.2799,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":220.8403,"elapsed_within_tithi_degrees":4.8403},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3,"moon_longitude":156.2799,"elapsed_within_degrees":9.6132},"yoga":{"number":7,"name":"Sukarma","sum_longitude":91.7195},"karana":{"half_tithi_index":36,"name":"Bava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"sky":{"method":"Sūrya-Siddhāntic Bhāskara-II 4-step iteration with atan2-based śīghra + varying peripheries + lunar latitude","engine_version":"3.0 (Pūrṇa — complete SS implementation)","tradition_sources":"Āryabhaṭīya 499 CE → SS Ch.1-5 Burgess 1860 → Siddhānta-Śiromaṇi Bhāskara II 1150 → Tantrasaṅgraha Nīlakaṇṭha 1501","input":{"year":2183,"month":2,"day":11,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2518425.770833,"ahargana":1929960.2708,"kali_year":5284,"ayanamsa_lahiri":26.4109,"grahas":{"sun":{"sidereal_longitude":295.803773,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":153.140173,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false,"latitude":-0.4025},"mars":{"sidereal_longitude":86.241173,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":2},"retrograde":true},"mercury":{"sidereal_longitude":295.34967299999994,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":174.88937299999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":330.456273,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":106.18147299999998,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":161.4172,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":341.4172,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":3},"retrograde":false}},"panchang":{"method":"Sūrya Siddhānta + Bhāskara-II iterative manda + Kerala-school (Mādhava-Nīlakaṇṭha) evection + variation + annual equation","engine_version":"2.0 (Kerala-school enhanced)","accuracy_note":"Sub-degree on Moon at any Kali-Yuga date (~2-5° residual max)","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":2183,"month":2,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2518425.770833,"kali_year":5284,"ahargana":1929960.2708,"sun":{"sidereal_longitude":295.4396,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":156.2799,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":220.8403,"elapsed_within_tithi_degrees":4.8403},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3,"moon_longitude":156.2799,"elapsed_within_degrees":9.6132},"yoga":{"number":7,"name":"Sukarma","sum_longitude":91.7195},"karana":{"half_tithi_index":36,"name":"Bava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.403,"elongation":139.16},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.403,"opposition_distance":40.84}},"eclipse_window_40days":[]},"city":{"slug":"perth","name":"Perth, Australia","lat":-31.9505,"lon":115.8605,"tz_offset_hours":8,"country":"AU","tier":"diaspora"},"tier2":{"city":{"slug":"perth","name":"Perth, Australia","lat":-31.9505,"lon":115.8605,"tz_offset_hours":8,"country":"AU","tier":"diaspora"},"sunriseLocal":"05:51","sunsetLocal":"19:11","solarNoonLocal":"12:31","dayLengthHours":13.338964892913054,"dayLengthDisplay":"13 Hours 20 Mins 20 Secs","nightLengthDisplay":"10 Hours 39 Mins 40 Secs","moonriseLocal":"20:58","moonsetLocal":"09:03","rahuKala":{"name":"Rāhu Kāla","start":"15:51","end":"17:31","startHours":15.853660249071243,"endHours":17.521030860685375,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:11","end":"10:51","startHours":9.184177802614716,"endHours":10.851548414228848,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:31","end":"14:11","startHours":12.51891902584298,"endHours":14.186289637457111,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:58","end":"09:24","startHours":8.961861721066164,"endHours":9.406493884163266,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:24","end":"06:46","startHours":6.40522678325783,"endHours":6.760932513735511,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:04","end":"12:58","startHours":12.074286862745877,"endHours":12.963551188940082,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:04","end":"04:58","startHours":4.0709079269980455,"endHours":4.9601722531922485,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:44","end":"05:51","startHours":4.737856171643698,"endHours":5.8494365793864525,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:45","end":"15:38","startHours":14.742079841328488,"endHours":15.631344167522691,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:59","end":"19:23","startHours":18.988401472299508,"endHours":19.388401472299506,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:11","end":"19:45","startHours":19.188401472299507,"endHours":19.744191676170885,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:56","end":"20:41","startHours":18.938401472299507,"endHours":20.688401472299507,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:04","end":"00:58","startHours":24.07428686274588,"endHours":24.96355118894008,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"05:51","end":"07:31","startHours":5.8494365793864525,"endHours":7.516807191000584,"quality":"inauspicious"},{"name":"Udveg","start":"07:31","end":"09:11","startHours":7.516807191000584,"endHours":9.184177802614716,"quality":"inauspicious"},{"name":"Chala","start":"09:11","end":"10:51","startHours":9.184177802614716,"endHours":10.851548414228848,"quality":"neutral"},{"name":"Labha","start":"10:51","end":"12:31","startHours":10.851548414228848,"endHours":12.51891902584298,"quality":"auspicious"},{"name":"Amṛta","start":"12:31","end":"14:11","startHours":12.51891902584298,"endHours":14.186289637457111,"quality":"auspicious"},{"name":"Kāla","start":"14:11","end":"15:51","startHours":14.186289637457111,"endHours":15.853660249071243,"quality":"inauspicious"},{"name":"Śubha","start":"15:51","end":"17:31","startHours":15.853660249071243,"endHours":17.521030860685375,"quality":"auspicious"},{"name":"Roga","start":"17:31","end":"19:11","startHours":17.521030860685375,"endHours":19.188401472299507,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"19:11","end":"20:31","startHours":19.188401472299507,"endHours":20.521030860685375,"quality":"inauspicious"},{"name":"Śubha","start":"20:31","end":"21:51","startHours":20.521030860685375,"endHours":21.853660249071243,"quality":"auspicious"},{"name":"Roga","start":"21:51","end":"23:11","startHours":21.853660249071243,"endHours":23.18628963745711,"quality":"inauspicious"},{"name":"Udveg","start":"23:11","end":"00:31","startHours":23.18628963745711,"endHours":24.51891902584298,"quality":"inauspicious"},{"name":"Chala","start":"00:31","end":"01:51","startHours":24.51891902584298,"endHours":25.851548414228848,"quality":"neutral"},{"name":"Labha","start":"01:51","end":"03:11","startHours":25.851548414228848,"endHours":27.184177802614716,"quality":"auspicious"},{"name":"Amṛta","start":"03:11","end":"04:31","startHours":27.184177802614716,"endHours":28.516807191000584,"quality":"auspicious"},{"name":"Kāla","start":"04:31","end":"05:51","startHours":28.516807191000584,"endHours":29.849436579386452,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:51","end":"06:51","startHours":5.8494365793864525,"endHours":6.8494365793864525,"planetary_lord":"Mars"},{"name":"Hora 2","start":"06:51","end":"07:51","startHours":6.8494365793864525,"endHours":7.8494365793864525,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"07:51","end":"08:51","startHours":7.8494365793864525,"endHours":8.849436579386452,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"08:51","end":"09:51","startHours":8.849436579386452,"endHours":9.849436579386452,"planetary_lord":"Moon"},{"name":"Hora 5","start":"09:51","end":"10:51","startHours":9.849436579386452,"endHours":10.849436579386452,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"10:51","end":"11:51","startHours":10.849436579386452,"endHours":11.849436579386452,"planetary_lord":"Venus"},{"name":"Hora 7","start":"11:51","end":"12:51","startHours":11.849436579386452,"endHours":12.849436579386452,"planetary_lord":"Sun"},{"name":"Hora 8","start":"12:51","end":"13:51","startHours":12.849436579386452,"endHours":13.849436579386452,"planetary_lord":"Mars"},{"name":"Hora 9","start":"13:51","end":"14:51","startHours":13.849436579386452,"endHours":14.849436579386452,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"14:51","end":"15:51","startHours":14.849436579386452,"endHours":15.849436579386452,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"15:51","end":"16:51","startHours":15.849436579386452,"endHours":16.849436579386452,"planetary_lord":"Moon"},{"name":"Hora 12","start":"16:51","end":"17:51","startHours":16.849436579386452,"endHours":17.849436579386452,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"17:51","end":"18:51","startHours":17.849436579386452,"endHours":18.849436579386452,"planetary_lord":"Venus"},{"name":"Hora 14","start":"18:51","end":"19:51","startHours":18.849436579386452,"endHours":19.849436579386452,"planetary_lord":"Sun"},{"name":"Hora 15","start":"19:51","end":"20:51","startHours":19.849436579386452,"endHours":20.849436579386452,"planetary_lord":"Mars"},{"name":"Hora 16","start":"20:51","end":"21:51","startHours":20.849436579386452,"endHours":21.849436579386452,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"21:51","end":"22:51","startHours":21.849436579386452,"endHours":22.849436579386452,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"22:51","end":"23:51","startHours":22.849436579386452,"endHours":23.849436579386452,"planetary_lord":"Moon"},{"name":"Hora 19","start":"23:51","end":"00:51","startHours":23.849436579386452,"endHours":24.849436579386452,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"00:51","end":"01:51","startHours":24.849436579386452,"endHours":25.849436579386452,"planetary_lord":"Venus"},{"name":"Hora 21","start":"01:51","end":"02:51","startHours":25.849436579386452,"endHours":26.849436579386452,"planetary_lord":"Sun"},{"name":"Hora 22","start":"02:51","end":"03:51","startHours":26.849436579386452,"endHours":27.849436579386452,"planetary_lord":"Mars"},{"name":"Hora 23","start":"03:51","end":"04:51","startHours":27.849436579386452,"endHours":28.849436579386452,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"04:51","end":"05:51","startHours":28.849436579386452,"endHours":29.849436579386452,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Kanyā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Tulā","Dhanu","Makara"]},"dishaShool":"North (Uttara)","chandraVasa":"North-West","rahuVasa":"North","anandadiYoga":{"name":"Śubha","quality":"Auspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-14.104580117493656,"eotMinutes":-14.577141550578775,"ayanamsa":26.4109}},"calendars":{"vikram_samvat":2240,"vikram_samvatsara":"Durmukhi","saka_samvat":2105,"saka_samvatsara":"Subhānu","bengali_samvat":1590,"malayalam_era":1359,"nanakshahi_year":714,"lunar_month":"Phālguna","lunar_month_paksha_full":"Phālguna Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Phālguna","lunar_month_amanta":"Māgha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Phālguna Kṛṣṇa Caturthī · Vikram 2240 Durmukhi · Śaka 2105 Subhānu"},"festivals":[{"id":"angarika-chaturthi","name":"Aṅgāraka Caturthī (Tuesday Caturthī)","name_sanskrit":"अङ्गारक चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa + Maṅgala","significance":"Tuesday-Caturthī (rare); supremely auspicious for Maṅgala-doṣa-nivāraṇa.","vrata":true,"detection":{"any_of":[{"tithi_number":4,"vara_name":"Maṅgalavāra (Tuesday)"},{"tithi_number":19,"vara_name":"Maṅgalavāra (Tuesday)"}]},"precedence":3},{"id":"sankashti-chaturthi","name":"Saṅkaṣṭī Caturthī","name_sanskrit":"सङ्कष्टी चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Gaṇeśa vrata.","vrata":true,"detection":{"tithi_number":19,"tithi_paksha":"Kṛṣṇa"},"precedence":6}],"todays_walk":{"walk":{"id":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"perth"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga February 11, 2183 CE · Perth, Australia · Vidhyamitra","description":"February 11, 2183 CE for Perth, Australia: Kṛṣṇa Caturthī, sūryodaya 05:51, sūryāsta 19:11.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2183-02-11","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2183-02-11","sa":"https://sa.vidhyamitra.com/city/perth/2183-02-11","hi":"https://hi.vidhyamitra.com/city/perth/2183-02-11","x-default":"https://vidhyamitra.com/city/perth/2183-02-11"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T16:53:49.306Z","verification":{"type":"multi-marker","confidence":"canonical"}},{"pillar":"Vidhyamitra-Tier2","pillar_version":"0.1.0","method":"Spherical astronomy + Lahiri ayanamsa + standard solar declination + EoT correction","retrieved_at":"2026-05-31T16:53:49.306Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T16:53:49.306Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}